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  • DRV8821: DC Solenoid driving

    Part Number: DRV8821 Other Parts Discussed in Thread: DRV8873 Tool/software: Dear, We are using the DRV8821DCA driver IC for driving DC solenoid latch type. Issue: Normally works well, but sometimes, direction change is not happening due to that solenoid…

  • DRV8821: DRV8821DCAR Ichop current

    Part Number: DRV8821 Tool/software: Hello, We are working with DRV8821DCAR with bipolar stepper motors with 9V / 6Ohm winding resistance. Working at 400mA chopping current is OK, but when configuring at 1Amp, the current never reach above 800mA peak…
    • Answered

  • DRV8821: Motor force reduction

    Resolved
    Part Number: DRV8821 Tool/software: Hi We have a mature design on the field with uses DRV8821 . We provide a fixed VRef voltage to fix the current to the windings. Now the product is on the field we realized that it would be necessary to change the…
    • Resolved

  • DRV8821EVM: Can i use the GUI for 8x motor with 4x of the DRV8821-23EVM-001

    Part Number: DRV8821EVM Other Parts Discussed in Thread: DRV8821 Tool/software: Hi, I would like to use DRV8821 in my current project but need to evaluate it. Using the demo board DRV8821-23EVM-001 it has 2 x independent motor control outputs. And there…

  • DRV8821: Calculation of the Shunts

    TI Thinks Resolved
    Part Number: DRV8821 Dear friends. Please could you calculate exact values of the shunts of the step motor driver DRV8821 PT72E_EN_Rev.1.4.pdf ) for next printer: 2.3.1 Paper Feed Motor (1) Specification Item Specification: Type PM Number of…
    • Answered

  • DRV8821: CURRENT REGULATION

    Resolved
    Part Number: DRV8821 we are using the DRV8821 as part of a controller for a new product. we have most of the chip inputs and outputs covered but have a question about the ABVREF and CDVREF inputs. We have your EV board for this chip (although we are not…
    • Resolved

  • DRV8821: Datasheet Timing Requirement Error

    TI Thinks Resolved
    Part Number: DRV8821 Hoping you can help answer a quick timing requirement question from the DRV8821 datasheet: I noticed Twake in the table references the SLEEPn signal yet the timing diagram below that table references the EN signals. Hoping you…

  • DRV8821: What Vref to use

    TI Thinks Resolved
    Part Number: DRV8821 I'm supplying the motors with 12V and logic with 3.3V, and my R_ISENSE resistors are all 0.3Ohms, same as the reference design. Can I just hook the VREF pins to 3.3V and let the overcurrent protection do the rest? Using the given…

  • DRV8821: No change in output current

    Part Number: DRV8821 Hi team, Issue: debugging the voltage of Vref from 1.0 V to 3.5 V, and the output current of the motor does not change (compared from the power of the input supply). And the customer would like to achieve the following result…
    • Answered

  • DRV8821: Stepper motor backfeeding DRV8821?

    Resolved
    Part Number: DRV8821 Other Parts Discussed in Thread: DRV8885 , DRV8880 , DRV8886 I have a DRV8821 driving a stepper motor at 1 amp peak. If I grab the motor and force it to turn when it is energized and stationary, the motor de-energizes. Probing the…
    • Resolved

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